Optical fiber array and optical measurement device

Patent metadata

Field	Value
Publication number	US-10830956-B2
Application number	US-201916541966-A
Country	US
Kind code	B2
Filing date	Aug 15, 2019
Priority date	Aug 31, 2018
Publication date	Nov 10, 2020
Grant date	Nov 10, 2020

Abstract

An optical fiber array includes a support, a single-mode optical fiber and a plurality of multimode optical fibers, the single-mode optical fiber and the multimode optical fibers being arranged on the support, and a polarizing plate provided on an end face of the support, wherein the single-mode optical fiber has polarization maintaining characteristics, an end face of the single-mode optical fiber and end faces of the multimode optical fibers face the end face of the support, and the polarizing plate covers the end faces of the multimode optical fibers.

First claim

What is claimed is:

1. An optical fiber array comprising:
a support;
a single-mode optical fiber and a plurality of multimode optical fibers, the single-mode optical fiber and the multimode optical fibers being arranged on the support; and
a polarizing plate provided on an end face of the support,
wherein
the single-mode optical fiber has polarization maintaining characteristics,
an end face of the single-mode optical fiber and end faces of the multimode optical fibers face the end face of the support, and
the polarizing plate covers the end faces of the multimode optical fibers.

2. The optical fiber array according to claim 1 , wherein a core diameter of the multimode optical fibers is not smaller than 100 μm and not greater than 500 μm.

3. The optical fiber array according to claim 1 , wherein the end faces of the multimode optical fibers are located in a same plane as the end face of the support.

4. The optical fiber array according to claim 1 , wherein
the single-mode optical fiber is a lensed fiber, and
the end face of the single-mode optical fiber protrudes outward from the end face of the support.

5. The optical fiber array according to claim 1 , wherein at least two of the multimode optical fibers are disposed on either side of the single-mode optical fiber.

6. The optical fiber array according to claim 1 , wherein a thickness of the polarizing plate is not smaller than 100 μm and not greater than 400 μm.

7. An optical measurement device comprising:
an optical fiber array including
a support,
a single-mode optical fiber and a plurality of multimode optical fibers, the single-mode optical fiber and the multimode optical fibers being arranged on the support, and
a polarizing plate provided on an end face of the support, wherein
the single-mode optical fiber has polarization maintaining characteristics,
an end face of the single-mode optical fiber and end faces of the multimode optical fibers face the end face of the support, and
the polarizing plate covers the end faces of the multimode optical fibers;

a distance adjusting unit that adjusts a distance between the end face of the optical fiber array and a light modulation device;
a laser source connected to the single-mode optical fiber of the optical fiber array; and
an intensity measuring unit that is connected to the multimode optical fibers of the optical fiber array, and measures an intensity of light emitted from the light modulation device, wherein
laser light emitted from the laser source enters the light modulation device through the single-mode optical fiber, and
laser light emitted from the light modulation device enters the intensity measuring unit through the polarizing plate and the multimode optical fibers of the optical fiber array.

8. The optical measurement device according to claim 7 , wherein a core diameter of the multimode optical fibers is not smaller than 100 μm and not greater than 500 μm.

9. The optical measurement device according to claim 7 , wherein the end faces of the multimode optical fibers are located in a same plane as the end face of the support.

10. The optical measurement device according to claim 7 , wherein
the single-mode optical fiber is a lensed fiber, and
the end face of the single-mode optical fiber protrudes outward from the end face of the support.

11. The optical measurement device according to claim 7 , wherein at least two of the multimode optical fibers are disposed on either side of the single-mode optical fiber.

12. The optical measurement device according to claim 7 , wherein a thickness of the polarizing plate is not smaller than 100 μm and not greater than 400 μm.

Assignees

• Sumitomo Electric Industries

Inventors

• Fujii Kosuke

Classifications

• G02F1/212

  Mach-Zehnder type · CPC title

• G02B6/06 Primary

  the relative position of the fibres being the same at both ends, e.g. for transporting images · CPC title

• G02B6/4204

  the coupling comprising intermediate optical elements, e.g. lenses, holograms (encapsulated active devices H01S5/02208) · CPC title

• G02B6/4257

  having a supporting carrier or a mounting substrate or a mounting plate (G02B6/3648 takes precedence) · CPC title

• G01M11/3181

  Reflectometers dealing with polarisation · CPC title